Enterasys a2h124-24 Benutzerhandbuch
100BASE-TX Twisted Pair Network
2-2 Network
Requirements
100BASE-TX Twisted Pair Network
When connecting a 100BASE‐TX segment to one of the fixed RJ45 ports (odd numbered
ports 1‐15), use Category 5 UTP cabling. The
ports 1‐15), use Category 5 UTP cabling. The
device
at the other end of the twisted pair
segment must meet IEEE 802.3‐2002 100BASE‐TX Fast Ethernet network requirements for
the SecureStack A2 to operate at 100 Mbps.
the SecureStack A2 to operate at 100 Mbps.
1000BASE-T Twisted Pair Gigabit Ethernet Network
The optional MGBIC‐02 supports 1000BASE‐T compliant RJ45 copper connections. When
connecting a 1000BASE‐T segment, use Category 5 UTP cabling. The device at the other
end of the twisted pair segment must meet IEEE 802.3‐2002 1000BASE‐T Gigabit Ethernet
network requirements for the devices to operate at 1000 Mbps.
connecting a 1000BASE‐T segment, use Category 5 UTP cabling. The device at the other
end of the twisted pair segment must meet IEEE 802.3‐2002 1000BASE‐T Gigabit Ethernet
network requirements for the devices to operate at 1000 Mbps.
When the A2 is in standalone mode (not stacked), the two stack ports 17 and 18 may be
user‐configured to serve as a standard switch ports allowing Gigabit uplink to the
network.
user‐configured to serve as a standard switch ports allowing Gigabit uplink to the
network.
100BASE-FX Multimode Fiber-Optic Network
The A2H254‐16 provides 8 ports that support 100 Mbps multimode fiber‐optic
connectivity using the fixed front‐panel MT‐RJ ports (even numbered ports 2‐16). The
MT‐RJ fixed front‐panel ports support 100BASE‐FX fiber‐optic cabling. The device at the
other end of the fiber‐optic segment must meet 100BASE‐FX Fast Ethernet network
requirements for the devices to operate at 100 Mbps. IEEE 802.3u 100BASE‐FX
characteristics for Multimode Fiber is a segment length of 412 meters (switched port) in
half duplex, 2 kilometers (switched port) in full duplex. This distance will be considerably
shorter from a repeater port. Make sure to check your network diameter specifications.
Refer to the Cabling Guide for details.
connectivity using the fixed front‐panel MT‐RJ ports (even numbered ports 2‐16). The
MT‐RJ fixed front‐panel ports support 100BASE‐FX fiber‐optic cabling. The device at the
other end of the fiber‐optic segment must meet 100BASE‐FX Fast Ethernet network
requirements for the devices to operate at 100 Mbps. IEEE 802.3u 100BASE‐FX
characteristics for Multimode Fiber is a segment length of 412 meters (switched port) in
half duplex, 2 kilometers (switched port) in full duplex. This distance will be considerably
shorter from a repeater port. Make sure to check your network diameter specifications.
Refer to the Cabling Guide for details.
Note: When using the fixed RJ45 ports on the SecureStack A2 for 100 Mbps operation
use Category 5 UTP cabling with an impedance between 85 and 111 ohms for 100 Mbps
operation.
use Category 5 UTP cabling with an impedance between 85 and 111 ohms for 100 Mbps
operation.